Lipo cell question

I have a couple 3s 2200mah 30c lipos I don't use for anything. I have a heli that runs on 2s lipos so I took one of the 3s packs apart and made a 2s pack out of it to test.
My question comes up because I get less runtime on the pack I made than I do on the 1200mah 2s packs I bought for the heli.

Based on the specs of the battery I took apart what is the mah and c rating of the individual cells in it? I thought each cell would be 2200mah and 30c but I'm obviously confused since I should get near double the run time (over the 1200mah pack) if my assumption were correct.

Thanks!